Vapor-liquid equilibrium, coexistence curve, and critical locus for pentafluoroethane + 1,1,1-trifluoroethane (R125/R143a)

Journal Article · Mon Mar 01 04:00:00 EST 1999 · Journal of Chemical and Engineering Data

DOI:https://doi.org/10.1021/je980266+· OSTI ID:346955

Higashi, Yukihiro ^[1]

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1. Iwaki Meisei Univ., Chuodai, Iwaki (Japan). Dept. of Mechanical Engineering

The vapor-liquid equilibrium for pentafluoroethane (R125) + 1,1,1-trifluoroethane (R143a) was measured by the static method in the temperature range between 273.15 K and 313.15 K. The vapor-liquid coexistence curve near the critical point was measured by observation of the meniscus disappearance. The critical temperatures and critical densities of the 0.4118 and 0.6208 mole fraction of R125 were determined from the saturation densities along the coexistence curve in the critical region. In addition, the critical locus for the R125/R143a mixture is correlated as a function of composition.

• OSTI ID: 346955
• Journal Information: Journal of Chemical and Engineering Data, Journal Name: Journal of Chemical and Engineering Data Journal Issue: 2 Vol. 44; ISSN JCEAAX; ISSN 0021-9568
• Country of Publication: United States
• Language: English

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